Bastille Day was yesterday, and you know what that means: French maids. No, seriously. DCist staff photographer James Calder was on hand for L’Enfant Cafe and Bar’s Bastille Day Block Party on 18th Street NW, in which teams of “maids” — some with much higher hems than others — tried to move as much champagne from one end of a crowded space to another. With a spoon. There was even some controversy: two teams actually…